1*4882a593SmuzhiyunWhat: /sys/bus/platform/devices/ci_hdrc.0/role 2*4882a593SmuzhiyunDate: Mar 2017 3*4882a593SmuzhiyunContact: Peter Chen <peter.chen@nxp.com> 4*4882a593SmuzhiyunDescription: 5*4882a593Smuzhiyun It returns string "gadget" or "host" when read it, it indicates 6*4882a593Smuzhiyun current controller role. 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun It will do role switch when write "gadget" or "host" to it. 9*4882a593Smuzhiyun Only controller at dual-role configuration supports writing. 10